阅读说明：本技术 Pet系统故障检测方法、装置、终端设备及pet系统 (PET system fault detection method, device, terminal device and PET system ) 是由 叶红杏 杨龙 张如美 赵玉秋 张军 于 2019-08-21 设计创作，主要内容包括：本申请公开了PET系统故障检测方法、装置、终端设备及PET系统。该方法包括：模拟生成探测器的探测模块发出的脉冲信号；计算该脉冲信号经过仿真PET电子系统处理后的标准处理结果；将所述脉冲信号输入PET系统的电子系统进行处理,得到实际处理结果；基于所述标准处理结果和所述实际处理结果确定所述PET系统的故障信息。通过将模拟生成的脉冲信号分别输入仿真PET电子系统和PET系统的电子系统进行处理后,确定PET系统可能存在的故障信息,可以实现PET系统的自动化故障分析,不需要人工进行分析,能够快速准确地发现PET系统存在的故障。(This application discloses PET system fault detection method, device, terminal device and PET systems.This method comprises: simulation generates the pulse signal that the detecting module of detector issues；The pulse signal is calculated by emulation PET electronic system treated standard processing result；The electronic system of pulse signal input PET system is handled, real processing results are obtained；The fault message of the PET system is determined based on the standard processing result and the real processing results.Input respectively by the pulse signal for generating simulation emulate PET electronic system and PET system electronic system handled after, determine PET system fault message that may be present, the automation accident analysis of PET system may be implemented, it does not need manually to be analyzed, can rapidly and accurately find failure existing for PET system.)

1. a kind of PET system fault detection method, which is characterized in that the described method includes:

Simulation generates the pulse signal that the detecting module of detector issues；

The pulse signal is calculated by emulation PET electronic system treated standard processing result, wherein the emulation PET is electric Subsystem is the electronic system of the structure and function of electronic system in the simulation PET system；

The electronic system that the pulse signal inputs the PET system is handled, real processing results are obtained；

The fault message of the PET system is determined based on the standard processing result and the real processing results.

2. the method according to claim 1, wherein described be based at the standard processing result and the reality Reason result determines the fault message of PET system, comprising:

Calculate corresponding first energy of each energy single event and the standard processing result in the real processing results In corresponding second energy of each energy single event；Wherein, the energy single event in the real processing results and the mark Energy single event in quasi- processing result is corresponding；

If the difference of corresponding first energy of some energy single event and the second energy is greater than first threshold, with the energy list thing There are failures for the corresponding energy circuit of part.

3. according to the method described in claim 2, it is characterized in that, first energy is the PET system to the pulse Signal carries out the sum of the pulse amplitude that sampling obtains, the second energy is that the emulation PET system adopts the pulse signal The sum of the pulse amplitude that sample obtains.

4. the method according to claim 1, wherein it is described according to the ideal process result and it is described it is practical at Reason result determines the fault message of PET system, comprising:

It detects in the first arrival time and the standard processing result of each time single event in the real processing results Whether meet preset condition between second arrival time of corresponding time single event；Wherein, in the real processing results Time single event is corresponding with the time single event in the standard processing result；

If meeting preset condition between the first arrival time and the second arrival time of some time single event, with time list There are failures for the corresponding time circuit of event.

5. according to the method described in claim 4, it is characterized in that, each time detected in the real processing results It is between first arrival time of single event and the second arrival time of corresponding time single event in the standard processing result It is no to meet preset condition, comprising:

Calculate each time single event in the real processing results the first arrival time and preset time standard value the Second arrival time of each time single event in one time difference and the standard processing result and the preset time Second time difference of standard value；

If the difference of some corresponding first time difference of time single event and the second time difference is greater than second threshold, this when Between single event the first arrival time and the second arrival time between meet preset condition.

6. method according to any one of claims 1 to 5, which is characterized in that the method also includes:

Obtain that the real processing results are each to meet the event corresponding time difference；

The number of same time difference appearance is obtained, and it is quasi- to carry out Gauss to the number that each time difference and each time difference occur It closes；

According to the halfwidth of Gauss curve fitting curve, the temporal resolution of the PET system is determined.

7. method according to any one of claims 1 to 5, which is characterized in that the method also includes:

Obtain the number q based on the pulse signal time single event obtained that the period is T, pulse number is k；

The dead time index of the PET system is calculated according to the number q of cycle T, pulse number k and time single event, wherein institute Stating dead time index is k*T/q.

8. a kind of PET system fault detection means, which is characterized in that described device includes:

Pulse generation unit, for simulating the pulse signal for generating the detecting module of detector and issuing；

Computing unit, for calculating the pulse signal by emulation PET electronic system treated standard processing result, wherein The emulation PET electronic system is the electronic system of the structure and function of electronic system in the simulation PET system；

Processing unit, the electronic system for the pulse signal to be inputted the PET system are handled, and obtain actual treatment As a result；

Determination unit, for determining the failure of the PET system based on the standard processing result and the real processing results Information.

9. a kind of terminal device including memory, processor and stores the calculating that can be run on a memory and on a processor Machine program, which is characterized in that the processor realizes following operation when executing described program:

Simulation generates the pulse signal that the detecting module of detector issues；

The pulse signal is calculated by emulation PET electronic system treated standard processing result, wherein the emulation PET is electric Subsystem is the electronic system for simulating the structure and function of electronic system in PET system；

The electronic system that the pulse signal inputs the PET system is handled, real processing results are obtained；

The fault message of the PET system is determined based on the standard processing result and the real processing results.

10. a kind of PET system characterized by comprising detector, scanning bed and terminal device, the detector are used in institute It states in PET system scanning process, the high-energy photon issued in detection subject, and is converted into pulse signal and is exported；

The terminal device, for simulating the pulse signal for generating the detecting module of detector and issuing；Calculate pulse signal warp Cross emulation PET electronic system treated standard processing result, wherein the emulation PET electronic system is to simulate the PET system The electronic system of the structure and function of electronic system in system；By the pulse signal input the electronic system of the PET system into Row processing, obtains real processing results；The event of PET system is determined according to the standard processing result and the real processing results Hinder information.

Technical field

This application involves Medical Devices technology, in particular to a kind of PET system fault detection method, device, terminal device And PET system.

Background technique

Positron emission computed tomography equipment (Positron Emission Tomography, PET) is a kind of More advanced larger medical image documentation equipment, the data acquisition principle of imaging are to bury in oblivion effect by positive electron and electronics It answers, produces two 511keV photons, photon becomes visible light after scintillation crystal, then is converted to electricity by detector detection Signal.

The electronic system of PET system mainly carries out about energy single event, time list thing the electric signal that detector obtains Part and the relevant treatment for meeting event, but since the electrical signal energy of detector acquisition is random, shape is random, the time is random, and The electronic system of one PET system usually requires electric signal acquired in multiple detecting modules of processing detector, therefore once Some detecting module breaks down, and system is caused to can not work normally.And by traditional Reliability Engineering ways and means, according to Hold in the palm the manual analysis method of related fields professional person (such as detector researcher) and designer personal experience gradually without Method adapts to increasingly huger PET system.

Summary of the invention

To overcome the problems in correlation technique, this specification provide a kind of PET system fault detection method, device, Terminal device and PET system.

Specifically, the application is achieved by the following technical solution:

In a first aspect, the application provides a kind of PET system fault detection method, which comprises

Simulation generates the pulse signal that the detecting module of detector issues；

The pulse signal is calculated by emulation PET electronic system treated standard processing result, wherein the emulation PET electronic system is the electronic system of the structure and function of electronic system in the simulation PET system；

The electronic system that the pulse signal inputs the PET system is handled, real processing results are obtained；

The fault message of the PET system is determined based on the standard processing result and the real processing results.

Second aspect, the application provide a kind of PET system fault detection means, and described device includes:

Pulse generation unit is detected, for simulating the pulse signal for generating the detecting module of detector and issuing；

Computing unit, for calculating the pulse signal by emulation PET electronic system treated standard processing result, In, the emulation PET electronic system is the electronic system of the structure and function of electronic system in the simulation PET system；

Processing unit, the electronic system for the pulse signal to be inputted the PET system are handled, and obtain reality Processing result；

Determination unit, for determining the PET system based on the standard processing result and the real processing results Fault message.

The third aspect, the application provide a kind of terminal device, including memory, processor and storage are on a memory and can The computer program run on a processor, the processor perform the steps of when executing described program

Simulation generates the pulse signal that the detecting module of detector issues；

The pulse signal is calculated by emulation PET electronic system treated standard processing result, wherein the emulation PET electronic system is to simulate the electronic system of the structure and function of electronic system in PET system；

The electronic system that the pulse signal inputs the PET system is handled, real processing results are obtained；

The fault message of the PET system is determined based on the standard processing result and the real processing results.

Fourth aspect, the application provide a kind of PET system, comprising: detector, scanning bed and terminal device, the detection Device is used in the PET system scanning process, the high-energy photon issued in detection subject, and is converted into pulse signal progress Output；

The terminal device, for simulating the pulse signal for generating the detecting module of detector and issuing；Calculate pulse letter Number by emulation PET electronic system treated standard processing result, wherein the emulation PET electronic system be simulate described in The electronic system of the structure and function of electronic system in PET system；The pulse signal is inputted to the Department of Electronics of the PET system System is handled, and real processing results are obtained；PET system is determined according to the standard processing result and the real processing results Fault message.

The technical solution that the embodiment of this specification provides can include the following benefits:

In this specification embodiment, simulation generates the pulse signal that the detecting module of detector issues, and then calculates the arteries and veins Signal is rushed by emulation PET electronic system treated standard processing result, and by the electronics of pulse signal input PET system System is handled to obtain real processing results, and the failure of PET system is determined based on standard processing result and real processing results Information.It is inputted at emulation PET electronic system and the electronic system of PET system respectively by the pulse signal for generating simulation After reason, PET system fault message that may be present is determined, the automation accident analysis of PET system may be implemented, do not need artificial It is analyzed, can rapidly and accurately find failure existing for PET system.

It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not This specification can be limited.

Detailed description of the invention

The drawings herein are incorporated into the specification and forms part of this specification, and shows the reality for meeting this specification Example is applied, and is used to explain the principle of this specification together with specification.

Fig. 1 shows the application scenarios schematic diagram of PET system；

Fig. 2 is a kind of flow chart of PET system fault detection method shown in one exemplary embodiment of the application；

Fig. 3 is the frame diagram of the PET system shown in one exemplary embodiment of the application；

Fig. 4 is that one kind shown in one exemplary embodiment of the application is determined based on standard processing result and real processing results The flow chart of PET system fault message；

Fig. 5 is that one kind shown in one exemplary embodiment of the application is determined based on standard processing result and real processing results The flow chart of PET system fault message；

Fig. 6 is that the temporal resolution index of a kind of pair of PET system shown in one exemplary embodiment of the application is assessed Flow chart；

Fig. 7 is the Gauss simulation curve schematic diagram shown in one exemplary embodiment of the application；

Fig. 8 is a kind of schematic diagram of PET system fault detection means shown in one exemplary embodiment of the application；

Fig. 9 is a kind of structural schematic diagram of terminal device shown in one exemplary embodiment of the application；

Figure 10 is a kind of structural schematic diagram of PET system shown in one exemplary embodiment of the application.

Specific embodiment

Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended The example of the consistent device and method of some aspects be described in detail in claims, the application.

It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application. It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps It may be combined containing one or more associated any or all of project listed.

It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ... When " or " in response to determination ".

It is the application scenarios schematic diagram of PET system referring to Fig. 1.The PET system may include that PET device 10 and terminal are set Standby 20.Wherein, PET device 10 may include detector 11 (PET detector) and scanning bed 12.Detector 11 such as Fig. 1 Shown to can be an annular detector, which includes multiple detecting modules, and each detecting module may include Sequentially connected scintillation crystal, electrooptical device and processing circuit.In an optional example, which can be Data acquire (DAQ, DataAcquisition) circuit system, and DAQ circuit system may include the son electricity for realizing different function Road, for example, front end data obtains circuit；Scanning bed 12 can drive subject to be scanned into annular detector 11.

Using PET system shown in FIG. 1, before scanning, subject can inject the tracer containing radionuclide, In In scanning process, radionuclide generation decay generates positive electron, and positive electron buries in oblivion generation a pair with intracorporal negative electron is detected Back-to-back gammaphoton.Gammaphoton is as a kind of high-energy photon, to can be by a pair of of detecting module in detector 11 Scintillation crystal detects, and scintillation crystal is transferred to electrooptical device, light after the high-energy photon detected is converted to optical signal Power conversion device is transferred to processing circuit after the optical signal is converted into electric signal, converts the electrical signal to pulse by processing circuit The information of signal and exportable pulse signal, for example, energy information, temporal information etc..

PET system usually requires to handle electric signal acquired in multiple detecting modules, once therefore some detecting module go out Show failure, the electronic system malfunction of PET system caused by the pulse signal unknown parameters caused by detecting module can not Orientation problem, will lead to PET system can not work normally.And by traditional Reliability Engineering ways and means, it relies on artificial Analysis method can not gradually adapt to increasingly huger PET system.

In order to more rapidly accurately be detected to the failure of PET system, in the embodiment of the present application, the pulse of simulation is believed Number as PET system electronic system signal source input PET system electronic system handled to obtain real processing results, The pulse signal is obtained into standard processing result after emulation PET electronic system processing, further according to standard processing result and reality Border processing result determines the fault message of PET system.

It is described in detail below with reference to PET system fault detection embodiment of the PET system shown in FIG. 1 to the application.

It referring to fig. 2, is one embodiment flow chart of the application PET system fault detection method, which can wrap Include following steps:

In step 201, simulation generates the pulse signal that the detecting module of detector issues.

As a kind of achievable mode, Fig. 3 shows the frame diagram of the application PET system.Referring to Fig. 3, PET system can be with Including host computer processing unit, data summarization circuit board, multiple module digitalized current circuit boards, multiple switch unit and multiple detections Module.

Host computer processing unit includes impulse waveform simulation subelement, is provided with impulse waveform on module digitalized current circuit board Form unit.Impulse waveform simulates subelement and is used to generate discretization digital pulse forms using computer language, described discrete Change digital pulse forms and be capable of the pulse signal that the detecting module of analog prober issues after digital-to-analogue conversion, for example, can be with Discretization digital pulse forms are generated by the exponential fitting function in matlab tool.Impulse waveform forms unit and is used for arteries and veins It rushes the discretization digital pulse forms that waveform modelling subelement simulates and is converted to analog pulse waveform, institute in generation step 201 The pulse signal stated.

The pulse signal and impulse waveform that the switch unit is used to that detecting module to be selected to issue form the arteries and veins that unit generates Rush signal source of one of the signal as PET system.

Data summarization circuit board collects the data of modules digitizer plate, including energy single event, time list thing Part meets event etc., and is sent to host computer processing unit and carries out subsequent processing.

Illustratively, it may include D/A converter module and logic processor that impulse waveform, which forms unit,.Digital-to-analogue conversion mould Block is used to be converted to the discrete signal that impulse waveform analogue unit simulates analog signal, and logic processor is used for control switch Input of the Unit selection signal source as PET system.

It should be noted that the number that the number of switch unit, impulse waveform form unit is preferably a with detecting module Number is equal, and switch unit, impulse waveform are formed between unit and the preferred three of detecting module and corresponded.

Based on the structure of above-mentioned PET system, the operating mode of PET system can be divided into normal mode of operation and be tested Operating mode.The signal source of normal mode of operation is pulse signal caused by each detecting module of detector, is tested The signal source of operating mode is the pulse signal that impulse waveform generation unit generates.Switch PET system by switch unit Operating mode.

In one example, (n+1) * can be generated by the exponential fitting functional simulation in matlab tool in step 201 (m+1) pulse signal that group detecting module issues, wherein impulse waveform generation unit on n representation module digitizer plate The group number of number, the number of m representation module digitizer plate, pulse signal is identical as the number of detecting module.Generating arteries and veins When rushing signal, the parameter of pulse signal can be adjusted according to actual needs, such as impulse amplitude, duration, pulse number, each group Time migration etc. between pulse signal.

In step 202, the pulse signal is calculated by emulation PET electronic system treated standard processing result.

In this step, emulation PET electronic system can be to simulate according to the structure and function of electronic system in PET system Electronic system.Illustratively, the electronic system of PET system may include signal amplification unit, energy unit, time quantum, Address Recognition unit meets the functional units such as logic unit and corresponding circuit structure, therefore emulation PET electronic system can be Simulate the above-mentioned functional unit and corresponding circuit structure and the electronic system that is formed of the electronic system of PET system.Due to emulation Failure is not present in PET electronic system, therefore treated that result can be defined as marking by emulation PET electronic system for pulse signal Quasi- processing result whether there is the judgment basis of failure as PET system.

In step 203, the electronic system of pulse signal input PET system is handled, obtains actual treatment As a result.

In step 204, determine that the failure of PET system is believed based on the standard processing result and the real processing results Breath.

Wherein, the fault message of PET system may include fault type and abort situation.Fault type may include energy Circuit and time circuit failure, abort situation are the specific location there are the energy circuit of failure and/or time circuit.

The energy circuit failure and time circuit failure that how to detect PET system are illustrated respectively below.

As shown in figure 4, the fault message of the energy circuit of PET system can be determined by the following method.This method can be with The following steps are included:

In step 401, corresponding first energy of each energy single event in the real processing results is calculated, and Corresponding second energy of each energy single event in the standard processing result.

In one example, first energy can the promising PET system electronic system to the pulse signal into The sum of the pulse amplitude that row sampling obtains, the second energy can carry out the pulse signal for the emulation PET electronic system Sample the sum of the pulse amplitude obtained.

In step 402, the difference of some energy single event corresponding first energy and the second energy is judged whether there is Greater than first threshold.

Wherein, the energy single event in real processing results is corresponding with the energy single event in standard processing result.This step In rapid, for the same energy single event, judge whether the difference of its corresponding first energy and the second energy is greater than the first threshold Value.

In step 403, the difference of corresponding first energy of some energy single event and the second energy is greater than the if it exists One threshold value, then there are failures for energy circuit corresponding with the energy single event.

In this step, if the difference of corresponding first energy of some energy single event and the second energy is greater than first threshold, Then explanation is for the energy single event, and corresponding energy circuit is relative to the emulation PET in the electronic system of the PET system There may be failures for corresponding energy circuit in electronic system, and then lead to corresponding first energy of the energy single event and second The difference of energy is larger.

In addition, if the difference of corresponding first energy of any energy single event and the second energy is respectively less than or is equal to the first threshold Value then illustrates that failure is not present in the energy circuit of electronic system in PET system.

As shown in figure 5, the fault message of the time circuit of PET system can be determined by the following method.This method can be with The following steps are included:

In step 501, the first arrival time and the institute of each time single event in the real processing results are detected It states in standard processing result and whether meets preset condition between the second arrival time of corresponding time single event.

Wherein, the time single event in the real processing results and the time single event pair in the standard processing result It answers.In this step, for single event at the same time, the difference of its corresponding first arrival time and the second arrival time are judged Between whether meet preset condition.Wherein, preset condition can be the preset condition with time correlation, for determining PET system The time quantum circuit of middle electronic system whether there is failure.

In one example, step 501 can be realized by following procedure:

Calculate the first arrival time and the preset time standard value of each time single event in the real processing results First time difference and the standard processing result in the second arrival time of each time single event and described default Second time difference of time standard value；

If some corresponding first time difference of time single event and the difference of the second time difference are greater than second threshold, Meet preset condition between the first arrival time and the second arrival time of the time single event.

In step 502, if meeting between the first arrival time and the second arrival time of some time single event default Condition, then there are failures for time circuit corresponding with the time single event.

In this step, if meeting between some time single event corresponding first arrival time and the second arrival time default Condition, it can be said that bright for the time single event, corresponding time quantum circuit is relative to the emulation in the PET system There may be failures for corresponding time quantum in PET electronic system, so cause the time single event it is corresponding first reach when Between meet preset condition between the second arrival time.

Illustratively, if the difference of some corresponding first time difference of time single event and the second time difference is greater than the Two threshold values, it can be said that bright for the time single event, corresponding time quantum circuit phase in the electronic system of the PET system For corresponding time circuit in the emulation PET electronic system, there may be failures, and then cause the time single event corresponding First time difference and the second time difference difference it is larger.

In addition, if being not satisfied between any time single event corresponding first arrival time and the second arrival time default Condition then illustrates that failure is not present in the time circuit of PET system.

In addition, obtaining more accurate two light in the PET device using TOF (time of flight, flight time) The sub- time difference is particularly important, and the index in PET machine system is temporal resolution, therefore casts aside detector cells, to PET The assessment of the temporal resolution index of system is also critically important.The system dead time in PET system depends on the timeliness of detector Can and PET system electronic system processing capacity, it decide the degree of system loss data and the index by detector list Member and electronic system codetermine, and exclude detector cells factor, also critically important to the assessment of the dead time index of PET system.

The assessment of the temporal resolution index and dead time index of PET system is illustrated individually below.

In one embodiment, on the basis of being based on embodiment illustrated in fig. 2, the above method can also include according to the reality Each the step of meeting the event corresponding time difference temporal resolution index of PET system is assessed in the processing result of border. Referring to Fig. 6, which may include:

In step 601, obtain that the real processing results are each to meet the event corresponding time difference.

In step 602, the number of same time difference appearance is obtained, and occur to each time difference and each time difference Number carries out Gauss curve fitting.

It wherein, may be entirely not identical, it is also possible to which part is identical for each time difference for meeting event.

In this step, for each time difference for meeting event obtained in step 501, can count each time difference goes out The number that each time difference and each time difference occur is carried out Gauss curve fitting, obtains curve as shown in Figure 7 by existing number, Horizontal axis is time difference Δ t, and the longitudinal axis is time numerical value.

In step 603, according to the halfwidth of Gauss curve fitting curve, the temporal resolution of the PET system is determined.

Wherein, the width between two half peak points of a height of Gauss curve fitting curve of half-breadth, referring to Fig. 7, Gauss is quasi- The peak value for closing curve is a, and the high w of half-breadth is the width between two half peak point a/2.

In one embodiment, on the basis of being based on embodiment illustrated in fig. 2, the above method can also include to PET system Dead time index the step of being assessed.Specifically, the step may include:

Obtain the number q based on the pulse signal time single event obtained that the period is T, pulse number is k；

The dead time index of the PET system is calculated according to the number q of cycle T, pulse number k and time single event, Described in dead time index be k*T/q.

Corresponding with the embodiment of aforementioned PET system fault detection method, present invention also provides PET system fault detections The embodiment of device, terminal device and PET system.

It is one embodiment block diagram of the application PET system fault detection means referring to Fig. 8, which is applied to PET system The terminal device of system may include: pulse generation unit 810, computing unit 820, processing unit 830 and determination unit 840.

Wherein, pulse generation unit 810, for simulating the pulse signal for generating the detecting module of detector and issuing；

Computing unit 820, for calculating the pulse signal by emulation PET electronic system treated standard processing knot Fruit, wherein the emulation PET electronic system is the electronic system of the structure and function of electronic system in the simulation PET system；

Processing unit 830 obtains reality for handling the electronic system of pulse signal input PET system Processing result；

Determination unit 840, for determining the event of PET system based on the standard processing result and the real processing results Hinder information.

The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus Realization process, details are not described herein.

For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying Out in the case where creative work, it can understand and implement.

It is one embodiment schematic diagram of the application terminal device, which may include: by interior referring to Fig. 9 The memory 920 and processor 930 that portion's bus 910 connects are stored with the meter that can be run on processor 930 on memory 920 Calculation machine program.Processor 930 realizes following operation when executing the computer program:

Simulation generates the pulse signal that the detecting module of detector issues；

The pulse signal is calculated by emulation PET electronic system treated standard processing result, wherein the emulation PET electronic system is the electronic system of the structure and function of electronic system in the simulation PET system；

The electronic system of pulse signal input PET system is handled, real processing results are obtained；

The fault message of the PET system is determined based on the standard processing result and the real processing results.

It is one embodiment schematic diagram of the application PET system, which may include: detector referring to Figure 10 1010, scanning bed 1020 and terminal device 1030.Detector 1010 is used in the PET system scanning process, and detection is tested The high-energy photon issued in vivo, and be converted into pulse signal and exported.

In one example, detector 1010 may include multiple detecting modules 1011, and each detecting module 1011 includes Scintillation crystal 10111, electrooptical device 10112 and processing circuit 10113, the N in order to which example is convenient, in Figure 10 for showing A detecting module 1011 only illustrates the structure of one of detecting module 1, the structure of other detecting modules and its phase Together, it is no longer shown one by one in Figure 10.

Wherein, the scintillation crystal 10111, for being issued in detection subject in the PET system scanning process High-energy photon, and the high-energy photon is converted into optical signal；

Electrooptical device 10112, for the optical signal to be converted into electric signal；

Processing circuit 10113, for the electric signal to be converted into pulse signal；

Terminal device 1030, for simulating the pulse signal for generating the detecting module of detector and issuing；Calculate pulse letter Number by emulation PET electronic system treated standard processing result, wherein the emulation PET electronic system be simulate described in The electronic system of the structure and function of electronic system in PET system；By the pulse signal input PET system electronic system into Row processing, obtains real processing results；The event of PET system is determined according to the standard processing result and the real processing results Hinder information.

Theme described in this specification and the embodiment of feature operation can be realized in the following: Fundamental Digital Circuit, Computer software or firmware, the computer including structure disclosed in this specification and its structural equivalents of tangible embodiment are hard The combination of part or one or more of which.The embodiment of theme described in this specification can be implemented as one or Multiple computer programs, i.e. coding are executed by data processing equipment on tangible non-transitory program carrier or are controlled at data Manage one or more modules in the computer program instructions of the operation of device.Alternatively, or in addition, program instruction can be with It is coded on manually generated transmitting signal, such as electricity, light or electromagnetic signal that machine generates, the signal are generated will believe Breath encodes and is transferred to suitable receiver apparatus to be executed by data processing equipment.Computer storage medium can be machine can Read storage equipment, machine readable storage substrate, random or serial access memory equipment or one or more of which group It closes.

Processing described in this specification and logic flow can by execute one of one or more computer programs or Multiple programmable calculators execute, to execute corresponding function by the way that output is operated and generated according to input data.Institute It states processing and logic flow can also be by dedicated logic circuit-such as FPGA (field programmable gate array) or ASIC (dedicated collection At circuit) Lai Zhihang, and device also can be implemented as dedicated logic circuit.

The computer for being suitable for carrying out computer program includes, for example, general and/or special microprocessor or it is any its The central processing unit of his type.In general, central processing unit will refer to from read-only memory and/or random access memory reception Order and data.The basic module of computer includes central processing unit for being practiced or carried out instruction and for storing instruction With one or more memory devices of data.In general, computer will also be including one or more great Rong for storing data Amount storage equipment, such as disk, magneto-optic disk or CD etc. or computer will be coupled operationally with this mass-memory unit To receive from it data or have both at the same time to its transmission data or two kinds of situations.However, computer is not required to have in this way Equipment.In addition, computer can be embedded in another equipment, such as mobile phone, personal digital assistant (PDA), mobile sound Frequency or video player, game console, global positioning system (GPS) receiver or such as universal serial bus (USB) flash memory The portable memory apparatus of driver, names just a few.

It is suitable for storing computer program instructions and the computer-readable medium of data including the non-volatile of form of ownership Memory, medium and memory devices, for example including semiconductor memory devices (such as EPROM, EEPROM and flash memory device), Disk (such as internal hard drive or removable disk), magneto-optic disk and CD ROM and DVD-ROM disk.Processor and memory can be by special It is supplemented or is incorporated in dedicated logic circuit with logic circuit.

Although this specification includes many specific implementation details, these are not necessarily to be construed as the model for limiting any invention It encloses or range claimed, and is primarily used for describing the feature of the specific embodiment of specific invention.In this specification Certain features described in multiple embodiments can also be combined implementation in a single embodiment.On the other hand, individually implementing Various features described in example can also be performed separately in various embodiments or be implemented with any suitable sub-portfolio.This Outside, although feature can work in certain combinations as described above and even initially so be claimed, institute is come from One or more features in claimed combination can be removed from the combination in some cases, and claimed Combination can be directed toward the modification of sub-portfolio or sub-portfolio.

Similarly, although depicting operation in the accompanying drawings with particular order, this is understood not to require these behaviour Make the particular order shown in execute or sequentially carry out or require the operation of all illustrations to be performed, to realize desired knot Fruit.In some cases, multitask and parallel processing may be advantageous.In addition, the various system modules in above-described embodiment Separation with component is understood not to be required to such separation in all embodiments, and it is to be understood that described Program assembly and system can be usually integrated in together in single software product, or be packaged into multiple software product.

The specific embodiment of theme has been described as a result,.Other embodiments are within the scope of the appended claims.In In some cases, the movement recorded in claims can be executed in different order and still realize desired result.This Outside, the processing described in attached drawing and it is nonessential shown in particular order or sequential order, to realize desired result.In certain realities In existing, multitask and parallel processing be may be advantageous.

The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.